Studies on the Electrochemical Reaction of La0.5 Sr0.5MO3 (M=Cr, Mn and Co) for solid Oxide Fuel Cell

Hyung-Ryul Rim; E-Ju Hwang; Ju-Seon Lee

Journal of Industrial and Engineering Chemistry, Vol.2, No.1, 79-85, June, 1996

Hyung-Ryul Rim, E-Ju Hwang, and Ju-Seon Lee

Dept. of Industrial Chem., Hanyang Univ., Seoul 133-791, Korea

Electrochemical characteristics of perovskite-type cathode materials -La_0.5Sr_0.5MO₃ (M=transition metal, Cr, Mn and Co)- for solid oxide fuel cell were studied by AC impedance spectroscopy. To confirm the rate-determining step of each electrode, different mixture ratios of O₂/N₂ gases were used. The rate- determining step of a chromium-containing electrode and a manganese-containing electrode was the intermediate step between the adsorption reaction and the dissociation reaction of the oxygen moelcules. And the rate-determining step of the cobalt-containing electrode was the charge-transfer reaction.

[References]

Adams AM, Bacon FT, Watson RGH, "Fuel Cell," W. Mitchell, Jr. (Editor), Academic Press, N.Y. (1963)
Appleby AJ, Foulkes FR, "Fuel Cell Handbook," Van Nostrand Reinhold, N.Y. (1989)
Appleby AJ, Conway BE, Bockris JOM, "Modern Aspects of Electrochemistry," 9, 369-478, Plenum Press, N.Y. (1974)
Steele BCH, "Electronic Ceramics," Elsevier Applied Science, N.Y. (1991)
Liaw BY, Weppner W, J. Electrochem. Soc., 138, 2478 (1991)
Fouletier J, Fabry P, Kleitz M, J. Electrochem. Soc., 123, 205 (1976)
Rim HR, Lee JS, J. Korean Ind. Eng. Chem., 7(1), 9 (1996)
Ghiodelli G, Lupotto P, J. Electrochem. Soc., 138, 2703 (1991)
RossMacdonald J, "Impedance Spectrocopy," John Wiley & Sons, U.S.A. (1987)
Franklin AD, J. Am. Ceram. Soc., 58, 465 (1975)
Bauerle JE, J. Phys. Chem. Solids, 30, 2657 (1969)
Verkerk MJ, Winnubst AJ, Burggraaf AJ, J. Mater. Sci., 17, 3113 (1982)
Yamamoto O, Takeda Y, Kanno R, Noda M, Solid State Ion., 22, 241 (1987)
Mizusaki J, Denki Kagaku, 57, 208 (1989)
Sasaki J, Mizusaki J, Yamauchi S, Bull. Chem. Soc. Jpn., 54, 1688 (1981)

[Referenced By]

[1] Adams AM, Bacon FT, Watson RGH, "Fuel Cell," W. Mitchell, Jr. (Editor), Academic Press, N.Y. (1963)

[2] Appleby AJ, Foulkes FR, "Fuel Cell Handbook," Van Nostrand Reinhold, N.Y. (1989)

[3] Appleby AJ, Conway BE, Bockris JOM, "Modern Aspects of Electrochemistry," 9, 369-478, Plenum Press, N.Y. (1974)

[4] Steele BCH, "Electronic Ceramics," Elsevier Applied Science, N.Y. (1991)

[5] Liaw BY, Weppner W, J. Electrochem. Soc., 138, 2478 (1991)

[6] Fouletier J, Fabry P, Kleitz M, J. Electrochem. Soc., 123, 205 (1976)

[7] Rim HR, Lee JS, J. Korean Ind. Eng. Chem., 7(1), 9 (1996)

[8] Ghiodelli G, Lupotto P, J. Electrochem. Soc., 138, 2703 (1991)

[9] RossMacdonald J, "Impedance Spectrocopy," John Wiley & Sons, U.S.A. (1987)

[10] Franklin AD, J. Am. Ceram. Soc., 58, 465 (1975)

[11] Bauerle JE, J. Phys. Chem. Solids, 30, 2657 (1969)

[12] Verkerk MJ, Winnubst AJ, Burggraaf AJ, J. Mater. Sci., 17, 3113 (1982)

[13] Yamamoto O, Takeda Y, Kanno R, Noda M, Solid State Ion., 22, 241 (1987)

[14] Mizusaki J, Denki Kagaku, 57, 208 (1989)

[15] Sasaki J, Mizusaki J, Yamauchi S, Bull. Chem. Soc. Jpn., 54, 1688 (1981)